Only two species of yeast --- ale yeast and lager yeast -- have been used for traditional beer brewing over the last 600 years. A lab in North Carolina may have found a third in the strangest place: On bees…

Last year, we broke the story of a robot being being developed to fight invasive lionfish. This spring, the prototype landed in the open ocean for the first time. Here’s how they took the idea from paper to practice.

The lionfish has always been a relentless predator. When it lived only in the Indo-Pacific, its ferocity and aggression were contained. But since the species has expanded to the Atlantic, its overpopulation is threatening fellow aquatic creatures. So scientists are…